If at first you do succeed, try and try again. iQiyi (NASDAQ: IQ) has become one of the market's most consistently hot stocks over the past month. Shares of China's leading streaming-video platform rose 22.4% last week, stretching its streak of double-digit percentage gains to four weeks in a row. The stock has now doubled over the past four weeks. iQiyi stock rose for seven consecutive trading days before a slight retreat on Friday.